Brake-handle



(No Model.)

J. W. PATERSON. BRAKE HANDLE No. 531,596. Pafiented Dec. 25, 1894'.

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' UNITED ST TES- PATENT OFFICE-1',

JAMES W. PATERSON, OF ornonao, rLL nors, ASSIGNOR TO THE ADAMS &

WESTLAKE COMPANY, OF ILLINOIS.

BRAKE-HANDLE.

SPECIFICATION formingpart of Letters Iatent No. 531,596, dated December25, 1894. Application filed July 25,1894. Serial No- 518,566. (Nomodel.)

To all whom. may concern:

Be it known that I, JAMES W. PATERSON, of the city of Chicago, in thecounty of Cook and State of Illinois, have invented certain new anduseful Improvements in Brake-Handles, of which the following is aspecification, reference being had to the accompanying drawings, and tothe letters of reference marked thereon. V c

This invention relates to that class of brakehandles for use on streetand other cars, which when moved or given rotation in one direction bythe driver or brakeman, grip upon the brake stafi, or parts attachedrigidly thereto, thereby carrying the brake staff with it in rotationand causing the brakes to be set, but, when the direction of rotarymovement is reversed, the handle shall rotate upon the brake staffwithout moving the latter, and the invention consists in combining withthe brake handle and brake stafi a frictional roll clutch, ashereinafter set forth.

In the accompanying drawings, Figurel is a view, chieflyin verticalsection, of my invention as applied to the upper end of a brake stafi.Fig. 2 is a plan showing the lower or socket portion of the handle insection, and the lower parts of the frictional clutch or gripping deviceand the brake staff in full lines, the upper parts of the frictionalclutch or gripping device being removed. Fig. 3 is, an exterior view, orside elevation,

of the gripping device applied to the brake staff, the handle beingremoved. Figs. 4, 5 and 6 are perspective views of detached parts of theinvention as hereinafter described.

Similar letters of reference indicate similar parts in the respectivefigures.

E represents the brake staff or rod upon which the brake chain isusually wound.

B is a hub shown detached in Fig. 4, which when in place is rigidlyattached to, or forms The hub B has an inclined face no and an outerannular shoulder r, the innersurface of which is inclined some what fromthe vertical line, as shown.

- As seen in Fig. 1, the hubB is rigidly united to thebrake stafi E bymeans of a pin J, but

any other convenient mode of union may be adopted. The hub is providedwith a air vcumferential groove 0 for a purpose hereinafter described.

G is a plate shown detached in Fig. 5, and .having inclined faces .9,and adapted to rotate freely upon the reduced upper portion of the brakestaff E. The inclined faces s are of a width equal tothe distancebetween the circumference of the plate 0 and that of the collar 3, andeach inclined face, at its highest point, terminates in a radialshoulder .9 flush with the surface of the collar 3, the shoulder suniting with the highest part ofsaid inclined face by a curved radialsurface 8 A, A represent conical-rolls, one of which is seen detached inFig. 6, a series of which rolls is arranged radially with respect to thecenter of the brake staff, as shown in Fig. 2. A roll is provided foreach of the inclined faces 8 of the plate 0, and each roll is confinedbetween the upper inclined face m of the hub B, and one of the inclinedfaces 8 of the plate 0, the roll, when in its inoperative position beingadapted to fit against the curved radial surface s of its shoulder 3 oThe upper reduced portion of the brake stafi E extends through the plate0, and its square collar f, which fits in a square socket f, of thebrake handle D.

The hub B, plate 0, and rolls A, when clamped together through themedium of the nut I-I upon the threaded portion 71 of the brake staff E,and the washer G, constitute the gripping device proper.

A socket or enlarged hollow boss d is formed at the bottom of the brakehandle, and the said socketfas will be seen, entirely incloses thegripping device. The lower interior portion of the socket d iscircularin form so as to rotate upon or around the hub B and plate C,while by reason of the fitting of the square hub f of the plate 0, inthe square socket f of the brake handle, the plate 0 will be carried inrotation with the. handlesocket D, as hereinafter explained.

The handle D is prevented from separation from the hub B by means of athreaded pin 10 which passes through the side of the socket d and entersan annular groove 0 formed in said hub.

In operation, the brake handle D being-zoo turned in one direction, sayto the right, the inclined faces 3 of the plate 0, bearing upon therolls A, cause the said rolls to rotate up and upon the inclined face mof the hub B, and down the inclined faces 3 of the plate 0 therespective opposing faces forming a series of gradually contractingseats, the rollsA being caused to ride or advance toward the narrow endsof said seats. As the hub B and plate C cannot move apart because oftheir connection through the medium of the brake stafi E and nut H, therolls A jam be tween the hub B and plate 0, and carry the hub and thebrake stafl connected thereto in rotation with thebrake handle. When,however, the direction of rotation of the handle is reversed, the rollsA at once start toward the wider ends of the seats in which they play,being stopped by the radial curved surfaces s, releasing the hub 13,.and consequently the brake staff E for another bite of the grippingmechanism. The function of the annular shoulder r is to take the endthrust of the rolls A. It will be seen that the brake chain may be woundupon the stafi by successive forward and backward movements of thehandle D without giving it a complete revolution.

There is comparatively little lost motion in the gripping device, themovement of the rolls, due to the operations required of them, beingslight. All theoperative parts may, if desired, be of steel, in order toinsure strength and durability. is simple in construction, strong, and.comparatively inexpensive.

I do not restrict myself to the number of rolls radially arranged, nor,consequently, to the number of inclined faces s to be formed upon theplate 0, forming, with the inclined face on of the hub B, a series ofopenings, ways or seats in which the said rolls play. The distance oftravel to insure thenecessary grip or bite, is, as will be understood,

dependent upon the number of rolls and inclines, which may be varied tosuit requirements. Instead of making. the pin upon which the plate 0revolves a reduced portion of the brake stafi, it may be. solid with theas shown, as these, and other minor details l of formation, may bechangedlwithout departing from the essentials of my; invention;

Neither do I limit myself to the mode of attaching or tying the partstogether, that here shown being, however, the one preferred; but,

Havingdescribed my invention, I claim-*- 1. In combination with a brakehandle and a brake staif, a frictional clutch, one member of which issecured to the brake staffiand provided with an inclined surface, andthe other The entire device member of which is secured to the brakehandle and furnished with a series of inclined faces, and a series ofconical or tapered rolls, confined radially between the two members ofthe frictional clutch,substantially as set forth.

2. The combination of a brake handle and a brake stafi a frictionalclutch, one member of which is secured to the brake staflf and providedwith an inclined upper surface, and the other member of which is securedto the brake handle and provided with a series of inclined lowersurfaces, and a series of conical or tapered rolls confined radiallybetween said two members of the clutch, substantially as set forth.

3. The combination of a brake staff, two members of a clutch providedwith frictional surfaces and a series of conical rolls confinediradially between said frictional surfaces of the two members of theclutch, substantially as set forth.

4. The combination of a brake staff, two members of a clutch providedwith frictional surfaces, a series of radially arranged conical rollsconfined between said surfaces, and a brake handle having a socketinclosing the two members of the clutch, and the rolls, substantially asset forth.

5. The combination of a brake handle having a lower socket,a frictionalclutch, the lower member of which is secured to the brake stafi andprovided with an operative surface to engage friction rolls, the othermember of which is secured to the brake handle, and also provided withoperative surfaces to engage the friction rolls, and a series of radialconical friction rolls, the whole frictional roll clutch or grippingdevice being confined within the socket of the handle, substantially asiset forth.

j 6. The combination of a brake handle, a frictional clutch, one memberof which is secured to the brake handle and provided with inclines onits lower surface,-and the other member of which is secured to the brakestaff ;and provided with an inclined upper surface, land a series offriction rolls radially arranged lbetween the opposing surfaces of therespectiive members of the clutch, and means where- ?by the two membersof the friction clutch may be drawn or tied together toclamp saidfriction rolls between them, substantially as set forth.

7. In combinationwitha brake handle, a ;hub secured theretoand having anupper inclined surface, a plate provided with a series 10f inclinesandadapted torevolve upon'the lbrakestafi, and a seriesof radial conicalrolls iconfined between said upper inclined surface iof the hub andthe-inclines of the plate, said ibrakehandle havinga socket inclosingsaid members of the frictional clutch, and adapted to move coincidentlywith the said plate, substantially as set forth.

, 8. In a frictionalroll clutch for a brake hanidle,-.the combination ofa brake staff, a hub mounted thereon having an inclined upper surfaceand an outer rim,'a series of conical friction rolls resting on saidupper surface, the end thrust of which rolls is received by said outerrim, an upper plate having a series of inclined faces at its under sideand adapted ,to rotate with the handle' upon the brake staff, said upperplate resting upon the series said stafi, having a circumferentialgroove, a I 5 "series of friction rolls confined between the faces ofthe said plate and hub, respectively, and a screw or pin projectingthrough the socket into said groove,'whereby the socket I may turn uponthe said hub and yet be pre- 20 vented from detachment therefrom,substantially as setforth.

In testimony whereof I hereto set my hand and affix my seal.

JAMES W. PATERSON. [L. s.] Witnesses:

WM. S. HAMM, .WM. S. ESTELL.

